STEAM BOILER WATER LEVEL CONTROL DEVICE Russian patent published in 2017 - IPC G01F23/02 G05D9/12 

FIELD: measuring equipment.

SUBSTANCE: invention can be used for production of water level in boiler drum control devices. Steam boiler contains water level control device contains medium level indicator in form of water indicating column 1 with level sight glass 2, which is rigidly connected to steam boiler 5 by means of pulse tubes 3 and 4. In water indicating column 1 upper part on bracket 17 housing 18 is installed, in which video camera 6 is arranged, wherein video camera 6 is displaced from direct observation zone. It does not prevent viewer from conducting of direct visual observation of water level by level sight glass 2. Water indicating column 1 is equipped with frame 19 with marks 20. Output from video cameras 6 is connected to signal converter 7 input. In the signal converter 7 output from image area selection unit 8 from level sight glass is connected to marks 20 recognition unit 9 input, which output is connected to measurements scale generation and perspective images minimizing unit 10 input, which output is connected to input of two media interface detector unit 11, which output is connected to input of media interface position values computer unit 12, which output is connected to interface unit 13 input. Signal converter 7 output signal through series-connected control unit 14 and control signal amplification unit 15 is supplied to electrified gate 16, installed on pipeline 21 to feed water into steam boiler 5. Mark 20 are made in form of graphic images, preferable in form of rectangles.

EFFECT: technical result is increase of water level control in boiler accuracy with its visual and instrumentation control.

6 cl, 3 dwg